dakkha : [adj.] clever; able; skilled; dexterous.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Dakkha1 (adj.) [Vedic dakṣa=Gr. a)ri -- dei/ketos & decio/s; dakṣati to be able; to please, satisfy, cp. daśasyati to honour, Denom. fr. *dasa=Lat. decus honour, skill. All to *dek in Lat. decet to be fit, proper, etc. On var. theories of connections of root see Walde, Lat. Wtb. under decet. It may be that *deks is an intens. formation fr. *diś to point (see disati), then the original meaning would be "pointing," i. e. the hand used for pointing. For further etym. see dakkhiṇa] dexterous, skilled, handy, able, clever D i.45, 74, 78; iii.190 (+analasa) M i.119; iii.2; S i.65; Nd2 141 (+analasa & sampajāna); J iii.247; DA i.217 (=cheka); Miln 344 (rūpadakkhā those who are of "fit" appearance).

Pali-English Dictionary, TW Rhys Davids, William Stede,

Dakkha2 (nt.) [dakkha1+ya, see dakkheyya] dexterity, ability, skill J iii.466.

Pali-English Dictionary, TW Rhys Davids, William Stede,

dakkha: I. a. 熟練  II. imper. of [dakkhati見]

巴漢辭典 編者：(斗六) 廖文燦